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The Effects of Self-Irradiation on the Lattice of 238(80%)PuO2*

Published online by Cambridge University Press:  06 March 2019

R. B. Roof Jr.*
Affiliation:
Los Alamos Scientific Laboratory Los Alamos, New Mexico 87544
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Abstract

As a function of self-irradiation, the crystalline lattice of 238(80%) PuO2 is gradually altered. The technique of x-ray line broadening was used to search for changes in the crystallite size and strain in the lattice following an initial annealing treatment. She integral breadth, Fourier coefficient, and variance methods were used to analyze the broadening of the x-ray powder pattern lines. The mechanism of alteration appears to be one of retained strain as no evidence was forthcoming from these techniques to indicate that the material undergoes significant crystallite size change. The strain in the lattice increased from zero at time zero to approximately 0.2% during a 2-year period.

Type
Research Article
Copyright
Copyright © International Centre for Diffraction Data 1971

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Footnotes

*

Work done under the auspices of the U. S. Atomic Energy Commission.

References

1. Klug, H. D. and Alexander, L. E., X-ray Diffraction Procedures, p. 491538 John Wiley & Sons (1958).Google Scholar
2. J, C. N.. Wagner, “Analysis of the Broadening and Changes in Position of Peaks in an X-ray Powder Pattern,” in Cohen, J. B. and Hilliard, J. E., Editors, Local Atomic Arrangements Studied by X-ray Diffraction, p. 217269 Gordon & Breach Science Publishers, Inc. (1966).Google Scholar
3. Haider, N. C. and Wagner, C. N. J., “Analysis of the Broadening of Powder Pattern Peaks using Variance, Integral Breadth, and Fourier Coefficients of the Line Profile,” in Mueller, W. M., Mallett, G. R., and Fay, M., Editors, Advances in X-ray Analysis, Vol. 9, P. 91101 Plenum Press (1966).Google Scholar
4. C, A. J.. Wilson, “Statistical Variance of Line-Profile Parameters, Measures of Intensity, Location and Dispersion,” Acta Cryst. 23, 888898 (1967).Google Scholar
5. C, A. J.. Wilson, “Statistical Variance of Line-Profile Parameters: Addendum,” ActaCryst. A25, 584585 (1969).Google Scholar
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